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AssigneeFreescale Semiconductor, Inc.
InventorsTHIERRY MICHEL LAPLAGNE, ERIC PIERRE ROLLAND, YEAN LING TEO
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A detection circuit for an alternator regulator, and method therefor. The detection circuit comprises an input circuit arranged to receive a phase signal from an alternator regulator and to output an attenuated sense signal representative of the received phase signal, a detection component operably coupled to the input circuit and arranged to receive the attenuated sense signal output by the input circuit, and a blocking capacitance operably coupled between the input circuit and the detection component and arranged to block a DC component of the attenuated sense signal. The detection component is arranged to compare the received attenuated sense signal to at least one reference voltage signal, and to output a signal representative of a frequency of the phase signal from the alternator regulator based at least partly on the comparison of the received attenuated sense signal to the at least one reference voltage signal.
A detection circuit for an alternator regulator, the detection circuit comprising:
The detection circuit of claim wherein the first offset reference voltage signal comprises a voltage greater than a bias voltage Vref by a reference voltage difference ΔVth and the second offset reference voltage signal comprises a voltage less than the bias voltage Vref by the reference voltage difference ΔVth, such that the first offset reference voltage signal is equal to Vref+ΔVth and the second offset reference voltage signal is equal to Vref−ΔVth.
A method of detecting a state of an alternator regulator, the method comprising:
Dependencies are inferred from the claim text.